This is a special episode of Cooking with Grandma, featuring four generations—Kay, Kathy, Astrid, and Kaatje—who pick blackberries and make jam together. To make your own jam, use this CHOW blueberry jam recipe, substituting blackberries for blueberries. Special thanks to the crew at Eat Real for introducing us to Kathy Kensinger and her family.

You know her by many names: YaYa, Nana, Bubbe, Gangy, Grandma. Cooking with Grandma celebrates family traditions. If you would like to nominate a San Francisco–based grandma for our series, please email Meredith Arthur with your contact information.

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